FGFS-4.1/OpenSceneGraph
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Added support notification of Drawable parents of StateSet that event/update callbacks have been called.

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This commit is contained in:
Robert Osfield 2005-04-26 09:58:19 +00:00
parent 38bf740ef4
commit 3c90a5f694
3 changed files with 92 additions and 5 deletions
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9
include/osg/Drawable
View File

@ -702,6 +702,7 @@ class OSG_EXPORT Drawable : public Object
ParentList _parents;
friend class Node;
friend class Geode;
friend class StateSet;
ref_ptr<StateSet> _stateset;
@ -720,7 +721,15 @@ class OSG_EXPORT Drawable : public Object
mutable GLObjectList _vboList;
ref_ptr<UpdateCallback> _updateCallback;
unsigned int _numChildrenRequiringUpdateTraversal;
void setNumChildrenRequiringUpdateTraversal(unsigned int num);
unsigned int getNumChildrenRequiringUpdateTraversal() const { return _numChildrenRequiringUpdateTraversal; }
ref_ptr<EventCallback> _eventCallback;
unsigned int _numChildrenRequiringEventTraversal;
void setNumChildrenRequiringEventTraversal(unsigned int num);
unsigned int getNumChildrenRequiringEventTraversal() const { return _numChildrenRequiringEventTraversal; }
ref_ptr<CullCallback> _cullCallback;
ref_ptr<DrawCallback> _drawCallback;
};

75
src/osg/Drawable.cpp
View File

@ -271,6 +271,9 @@ Drawable::Drawable()
_supportsVertexBufferObjects = false;
_useVertexBufferObjects = false;
_numChildrenRequiringUpdateTraversal = 0;
_numChildrenRequiringEventTraversal = 0;
}
Drawable::Drawable(const Drawable& drawable,const CopyOp& copyop):
@ -285,6 +288,9 @@ Drawable::Drawable(const Drawable& drawable,const CopyOp& copyop):
_supportsVertexBufferObjects(drawable._supportsVertexBufferObjects),
_useVertexBufferObjects(drawable._useVertexBufferObjects),
_updateCallback(drawable._updateCallback),
_numChildrenRequiringUpdateTraversal(drawable._numChildrenRequiringUpdateTraversal),
_eventCallback(drawable._eventCallback),
_numChildrenRequiringEventTraversal(drawable._numChildrenRequiringEventTraversal),
_cullCallback(drawable._cullCallback),
_drawCallback(drawable._drawCallback)
{
@ -361,6 +367,75 @@ void Drawable::setStateSet(osg::StateSet* stateset)
}
void Drawable::setNumChildrenRequiringUpdateTraversal(unsigned int num)
{
// if no changes just return.
if (_numChildrenRequiringUpdateTraversal==num) return;
// note, if _updateCallback is set then the
// parents won't be affected by any changes to
// _numChildrenRequiringUpdateTraversal so no need to inform them.
if (!_updateCallback && !_parents.empty())
{
// need to pass on changes to parents.
int delta = 0;
if (_numChildrenRequiringUpdateTraversal>0) --delta;
if (num>0) ++delta;
if (delta!=0)
{
// the number of callbacks has changed, need to pass this
// on to parents so they know whether app traversal is
// reqired on this subgraph.
for(ParentList::iterator itr =_parents.begin();
itr != _parents.end();
++itr)
{
(*itr)->setNumChildrenRequiringUpdateTraversal( (*itr)->getNumChildrenRequiringUpdateTraversal()+delta );
}
}
}
// finally update this objects value.
_numChildrenRequiringUpdateTraversal=num;
}
void Drawable::setNumChildrenRequiringEventTraversal(unsigned int num)
{
// if no changes just return.
if (_numChildrenRequiringEventTraversal==num) return;
// note, if _eventCallback is set then the
// parents won't be affected by any changes to
// _numChildrenRequiringEventTraversal so no need to inform them.
if (!_eventCallback && !_parents.empty())
{
// need to pass on changes to parents.
int delta = 0;
if (_numChildrenRequiringEventTraversal>0) --delta;
if (num>0) ++delta;
if (delta!=0)
{
// the number of callbacks has changed, need to pass this
// on to parents so they know whether app traversal is
// reqired on this subgraph.
for(ParentList::iterator itr =_parents.begin();
itr != _parents.end();
++itr)
{
(*itr)->setNumChildrenRequiringEventTraversal( (*itr)->getNumChildrenRequiringEventTraversal()+delta );
}
}
}
// finally Event this objects value.
_numChildrenRequiringEventTraversal=num;
}
osg::StateSet* Drawable::getOrCreateStateSet()
{
if (!_stateset) setStateSet(new StateSet);

7
src/osg/StateSet.cpp
View File

@ -147,7 +147,10 @@ StateSet::StateSet(const StateSet& rhs,const CopyOp& copyop):Object(rhs,copyop)
_binNum = rhs._binNum;
_binName = rhs._binName;
_updateCallback = rhs._updateCallback;
_numChildrenRequiringUpdateTraversal = rhs._numChildrenRequiringUpdateTraversal;
_eventCallback = rhs._eventCallback;
_numChildrenRequiringEventTraversal = rhs._numChildrenRequiringEventTraversal;
}
@ -1537,7 +1540,7 @@ void StateSet::setNumChildrenRequiringUpdateTraversal(unsigned int num)
osg::Drawable* drawable = dynamic_cast<osg::Drawable*>(*itr);
if (drawable)
{
//drawable->setNumChildrenRequiringUpdateTraversal(drawable->getNumChildrenRequiringUpdateTraversal()+delta);
drawable->setNumChildrenRequiringUpdateTraversal(drawable->getNumChildrenRequiringUpdateTraversal()+delta);
}
else
{
@ -1582,7 +1585,7 @@ void StateSet::setNumChildrenRequiringEventTraversal(unsigned int num)
osg::Drawable* drawable = dynamic_cast<osg::Drawable*>(*itr);
if (drawable)
{
//drawable->setNumChildrenRequiringEventTraversal(drawable->getNumChildrenRequiringEventTraversal()+delta);
drawable->setNumChildrenRequiringEventTraversal(drawable->getNumChildrenRequiringEventTraversal()+delta);
}
else
{